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package utils;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Amauri
 */
@WebFilter("/acesso/*")
public class FiltroUsuarioLogado implements Filter{

    FilterConfig filterConfig;
    
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        
        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse resp = (HttpServletResponse) response;
        HttpSession session = req.getSession(true);
        
        if (session.getAttribute("usuarioLogado") == null)
        {
            resp.sendRedirect(req.getContextPath() + "/index.jsf");
        }
        
        chain.doFilter(request, response);
    }

    @Override
    public void destroy() {
        this.filterConfig = null;
    }
    
}
